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686DLX
inserted into socket completely.
3.5. CPU SPEED SETUP
The system's speed is fixed to 66.6MHz. The user can change the DIP
SWITCH (S1) selection to set up the CPU speed for 200 - 633MHz processor.
The CPU speed must match with the frequency RATIO. It will cause system
hanging up if the frequency RATIO is higher than CPU's.
DIP SWITCH (S1)
1
2
3
4
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
ON
ON
OFF
M
The CPU is a sensitive electric component and it can be easily
damaged by static electricity, so users must keep it away from
metal surface when the CPU is installed onto mainboard.
3.6. CMOS RTC & ISA CFG CMOS SRAM
There're RTC & CMOS SRAM on board; they have a power supply from
external battery to keep the DATA inviolate & effective. The RTC is a REAL-
TIME CLOCK device, which provides the DATE & TIME to system. The
CMOS SRAM is used for keeping the information of system configuration, so
the system can automatically boot OS. every time. Due to the life-time of
Battery internal battery is 5 years, the user can change a new Battery to
replace old one after it can not work.
M
Danger of explosion if battery is incorrectly replaced.
M
Replace only with the same or equivalent type recommended by
FREQ.
EXT.CLK.
NT.CLK.
RATIO
MHz
MHz
3
66
200
3.5
66
233
4
66
266
4.5
66
300
5
66
333
5.5
66
366
3-6
CPU Type
Pentium
II 200 MHz
Pentium
II 233 MHz
Pentium
II 266 MHz
Pentium
II 300 MHz
Pentium
II 333 MHz
Pentium
II 366 MHz
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